Add test case to cover ViewInputs change

Author: Kyle-Ye

Tests/OpenSwiftUICoreTests/View/Input/ViewInputsTest.swift

@@ -0,0 +1,35 @@
+//
+//  ViewInputsTest.swift
+//  OpenSwiftUICoreTests
+
+import OpenGraphShims
+@_spi(ForOpenSwiftUIOnly)
+import OpenSwiftUICore
+import Testing
+
+@MainActor
+@Suite(.enabled(if: attributeGraphEnabled))
+struct ViewInputsTest {
+    @Test
+    func debugProperties() {
+        let graph = ViewGraph(rootViewType: EmptyView.self)
+        graph.globalSubgraph.apply {
+            var inputs = _ViewInputs(withoutGeometry: graph.graphInputs)
+
+            #expect(inputs.changedDebugProperties == .all)
+            inputs.changedDebugProperties = []
+
+            inputs.transform = .init(value: .init())
+            #expect(inputs.changedDebugProperties.contains(.transform))
+
+            inputs.size = .init(value: .zero)
+            #expect(inputs.changedDebugProperties.contains(.size))
+
+            inputs.environment = .init(value: .init())
+            #expect(inputs.changedDebugProperties.contains(.environment))
+
+            inputs.viewPhase = .init(value: .invalid)
+            #expect(inputs.changedDebugProperties.contains(.phase))
+        }
+    }
+}